Plural lamp socket



Sept. 16'. 192%.,

, 1,508,765 R. B. BENJAMIN I PLURAL LAMP SOCKET File d Audi 23 l 9l9 2 Sheath-Sheet 1 i Ill i.

IN ENTOR.

MMRNEY;

Sept 16 192%. 1,508,765. R. a. BENJAMIN PLURAL LAMP SOCKET Filed April 23 1919' 2 SheeaiLs-Shet 2 W a 1 \k NVENTOR.

TTORNEYS.

Patented Sept. 16, 1924.

m'rso STATES 1,508,765 PATENT OFFICE.

REUBEN B. BENJAMIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO BENJAMIN ELECTRIC MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

rLUnAI. LAMP soox'n'r.

Application meaa ru 23, 1919. Serial No. 292,197.

which the following isa full, clear, concise,

I and exact description, reference being bad to the'accompanymg drawing, forming a part of this specification.

My invention relates to improvements in plural lamp sockets,-and has'for one of its objects the production of a simple, compact,

-' tion of the body and serviceable lamp socket in which the lamp-receptacle-carrying part may be made in a single piece of molded material having suitable recesses and apertures therein to permit the easy and ready assemblage within the insulating body portion of the various lamp receptacles and conductor members. provision being made for the extending of the conducting members to terminals on the exterior of the body.

For the purpose of disclosing' my invention I have illustrated certain embodiments,

thereof in the accompanying drawings. In these drawingsv Fig.v 1 is a front elevation of a twin lamp socket embodying my invention; J

Fig. 2 is a side elevation thereof, a porbeing broken away to show a part of the interior construction;

Fig. 3 is a sectional view taken on the line 33 of Fig. 1;

Fig. 4 is a sectional view taken on the line 4.4 of Fig. 2;

Figs. 5 and 6 are perspective views of the conducting fnembers for the receptacle terminals; f I

Fig. 7 is a side elevation of a modified form of my invention, a portion of the body being broken away;

Fig. 8 is a sectional view taken on the line taken on the general cylindrical shape and has formed at one side thereof a cylindrical extension 2. Formed .in the lower end of the body portion 1 is a receptacle recess 3 and asimilar recess 4 is formed in the extension 2. Ihe body, comprising the cylindrical portion 1 and its extension 2, is preferably-made of'molded insulating material and is of such shape and construction that it can be molded in one single piece, thereby avoiding the necessity of assembling. a plurality of molded portions to form a body portion, and reducing, therefore, the cost and the use of screws or other assemblage connecting devices. -Within the body portion and communicating both with the receptacle recess 4 and the receptacle re-' cess 3 I provide a. lurality of longitudinally extending channe s 5, 6 and7. These chan nels are preferably elongated and at their sides merge into the recess 4 and at their hottoms merge into the recess 3. Each of the two side channels 5.and 7 is of just sufficient width and length to. receive a U-shaped conducting member having a base 8 and two angularly disposed legs 9. A threaded shell 10 isdisposedwithin the recess 4. This shell is of the usual construction, having inturned flanges at its bottom, and these inturned flanges are connected, respectively, by screws 11 with the base 8 of each of the U-shaped shell conductor members. A similar threaded shell 12 is arranged withintherecess 3 and its bottom portion is connected by means of screws 13 with the bottom legs 9 of the threaded shell conductors. These U-shaped shell conductors are secured in position by means of screws 14, which pass through the body portion from the top and screw into the'top leg 9 thereof. I These screws 14 also secure in position a threaded shell contact 15. The third U-shaped member is lon er than the other two members and is provi ed .with a base 16, a tongue 17 and a second tongue 18'. This member is located within the center recess 6 and the base 16 forms the center contact for .the threaded shell 10, while the tongue'17 forms the center contact for the shell 12. This center contact member is secured in position by means of an elongated screw 19 which passes through the top of the body member and also through an insulating plug 20, securing the plug 20 in position and forming in connection with a washer 21 on the end of the plug a plug center contact. V

" 5 portion and a'receptacle sub-assembly, .sai

. In the structure illustrated in Figs. 7 to 12, I have shown a twin plug' receptacle of the same type as that illustrated in Fi s.

1 to 6, with'the addition of a switch or. controlling the circuit of one of the receptacles. In this structure, instead of making the center contact 17 and 16,all in ,one piece,

the center contact 17 is made in a separate piece and secured'to the base by means-of ascrew 22 fastening into a nut 23 molded in the body when the body is formed. A spring contact blade 24 is secured in position at the {rear bf the contact member-16 by the's'crew 19 ,anda similar spring conthe end of the switch handle 29 and project snapped down it bridges the s ring blades 24 and 25, and thus completes ,t e circuit ofv ters Patent, is

' I contacts, and insulation on positioning and insulating said contacts with respect to each other, said receptacle'sub-assembly compristact blade 25 is mounted on the contact 17, these contact blades being disposed so that their free ends are opposite one another. Mounted in a, recess 26 in the body is a switch member comprising a .bridging contact 27 mounted on a pin 28 extending through the body. An operating handle 29 formed of insulating material is also mounted on this pin and projects beyond the side of the body. This handle is connected with the blade by means of a bar 30 having at one end a pin 31 resting in notches 32- in 'ingthrough an opening in the front end of the U-shaped contact member 27. Inter posed between the front end of the .U-

shaped contact member and a shoulder at the rear of the bar 30 is a coiled spring 33,-

this construction being such that when the handle 29 is raised past the dead center on the pin 28 the contact 27 will be snapped up,

and vice versa. When the contact 27 1s the center contact 17. correspondingly, when the bridging contact 27 is snapped up,

the circuit for the center contact 17 1s. opened and the circuit,therefore, through this receptacle is opened.

It is seen from'the above I have provided a simple plural lug cluster wherein a one-piece molded body is provided, within which may be mechanically secured and arranged inposition the var1" ous conductor members of 1 eceptacle of th1s character. I v

p 'Having thus described my inventiom'what I claim .as new and: desire to seeure by Let- 1. A two-way plug comprising a pin plug portion compris' shell and center 'ing. a pair of threaded shell contactaa pair f QR c ntact. members,a pair ofrstamp. ings electrically and mechanically connectingsaid receptacle shell contacts and located on oppodte sides-of the plane thrbu'ghthe .ax es' ofisaid receptacle shell wattage" in a plane perpendicular to the through the axes of the receptacle shel con--' description that idi' extending at right angles to the end recess,

stamping member lying substantially in said plane for supplying current to said center receptacle contact members, and means for securing said receptacle sub-assembly to said plug portion and for electrically connecting the plug contacts with the receptacle contacts comprising three substantially parallel screw members threaded into said stamping respectively, 'anld lying; in is! e p ane t roug plane perpendicular to t the axesof the receptacle shell contacts.

2. A two-way plug comprising a-plug portion and a receptacle sub-assembly, said plug portion comprising shell and" center' contacts, and insulation r positioning and insulating said contacts with respect to each other, said receptacle sub-assembly com-- prlsing a-vpair of threadedshell contacts,

a pair of center contact members, a pair of stampings electrically and mechanically connectingsaid receptacle shell contacts and located on 'opposite' sides of the plane through the axes @of said receptacle shell contacts, a stamping member lying substan-.

tially in said plane for supplying-current to said center receptacle contact members, and

sembly to said plug portion and ;for electrically connecting the plugcontactsiwith the receptacle contacts comprising three. sub- .stant'iall parallel screw members threaded into sai stampings respectively, and lying ane tacts, said receptacle shell contacts having means for securing said receptacle sub-asinwardly extending flanges, and" said pair I of stampings engaging 'said flanges'. I

3. A two-way plug comprising -a' plug portion and vreceptacle porti'oh, said plugportion comprising shell-and center contacts, and insulation for positioning-and insulating said ,cpntactswlth respect to each other, said receptacle portion comprising a pair'of threadedi'shell contacts, a pair of center contact members," metal supporting es of the lane through'the'axes o saidr'eceptacle she contacts-f":

' a 'In'a device of d. character-described, th mmbination with a molded insulating bodyfhavmi a shell rece tacle 'rccess in' one ell receptah e recessinone side of UY-shaped" conductor "members mounted at the rear -of; said side recess, .screws exthreaded lamp-receiving shell mounted in through the top'of said body and into one "leg of said conductor members, a

lamp-receiving shell mounted in said endsaid'side recess and secured to the base of said U-shaped members, a second threaded recess and secured to the opposite leg of said U-shaped members, and a center contact for each "of said threaded lamp-receiving shells arranged at the bottom thereof and arranged to be electrically connected with a terminal on the top of said body, saidholding screws being connected with a terminal on the top of said body.

5. A plu receptacle comprising a plug portion an a receptacle portion, said plug portion comprising an insulating base and a threaded shell contact supported thereby, said receptacle portion comprising a one 1 piece insulating base supported by said plug v the opening ends of said recesses for secur-l ing said threaded shell receptacle contacts,

portion, and having a plurality of open-ended cylindrical recesses thereimfcommunicating with each other, a plurality of threaded shell receptacle contacts, one for each of said cylindrical recesses, eachinsertable into its recess through the outer end thereof, anchora e means located at the junction of said cylin rical recesses, and means accessible for securing and releasing operation through to said anchorage means.

6. A plug receptacle comprising a plug f portion and a receptacle portion, said plugportion com rising an insulating base and a threaded s ell contact supported thereby,

a said rece tacle ortion comprising a onepiece insu ating "ase supported by said plug portion, and having a plurality of openended cylindrical recesses therein, communicatin with each other, a plurality of threaded s ell rece tacle contacts, one for each, of said cylin rical recesses, each in-. sertable into its recess through the outer end thereof, anchoragp means located at the junction of said cy 'ndrical recesses, and

means accessible for securing and releasing operation through the opening ends of said recesses for securing said. threaded shell receptacle contacts. to said anchorage means,

said anchorage means comprising a sheet, metal stamping, and said securing means pomprisingscrews threaded into saldstamp- A plug receptacle comprising a plug portion an a receptacle portion,.sa id plugportion comprising an insulating base "and a threaded 8 said rece tacle ell contact supported thereby,

portion, and having auplurality of-openendedcylindrical recesses therein, I com-' municatin with each other, a plurality of threaded s ell receptacle contacts, one for each of said cylindrical recesses, each insertable into its recess throu'h the outer end thereof, anchorage means ocated at the junction of said cylindrical recesses, and,

ortion comprising a 'one--- piece insu ating ase supported by said plug means for securing said threaded shell, receptacle contacts to said anchorage means,

said anchorage means comprising a sheet metal stamping, and said securing means comprising screws threaded into said stamping, each of said'threaded shell receptacle contacts having an inwardly extending flange at its inner end, said stamping having portions extending parallel to the planes of the flanges of sald threaded receptacle contacts respectively to which said flanges are secured.-. x j

8. A plugreceptacle comprising a plug, portion and a receptacle portion; said plug portion comrising an insulating base and a threaded s ellcontact supported thereby, said receptacle portion comprising a'onepiece insulating base supported by said plug portion, and having a plurality of openended cylindrical recesses therein, communicatin threaded s ell rece tacle contacts, one for each of said cylindrical recesses, each inend thereof, anchorage means located at the with each other a plurality of 1 'serta'ble into its recess through the outer v junction of said cylindrical recesses, and means accessible for securing and releasing operation through the openingends of saidrecesses for securing said threaded shell receptacle contacts to said anchorage means,

said anchorage means comprising a sheet metal stamping, and saidsecuring means 7 comprising screws threaded into said stamping; said stamping being electrically connected to the plugshell contact.

9.; fAplug receptacle comprising a plug portion and a receptacle portion, said plug portion comprising an insulating base and a threaded shell contact supported thereby, saidreceptacle portioncomprising a onepiece insulating base supported by said plug v .wardl extending flange at the outer end of the p ug, and .a'screw, the head of which engages said flange and isthreaded into said stamping. Y

10. A 'lug switch receptacle comprising a plug portion, arecept'acle portion, and a switch, said plug portion comprising an insulating base and a threaded shell conciylindrical recesses, and means accesp tact-supported thereby, said receptacle por-- tion comprisinga one-piece insulating base supported by said plug ortion, and having a plurality t open-en ed cylindrical recesses therein communicatin with each other, a plurality of threade shell rece tacle contacts, one: for each of said cylin ical recesses, each insertable into its recess through the outer end thereof, said insulating base also having a switch recess therein in communication with said cylindrical recesses, anchorage means located at the junction of said recesses, and means accesfor securing said threaded shell receptacle sible* for securing and releasing operation through the opening ends of said recesses contacts tojsaid anchorage'means.

11. A plug switch receptacle. comprising a plu portion and a receptacle portion, said p ug portion com rising an insulating base, and threaded she and center contacts a supported-thereby, said receptacle portion.

comprising a one-piece insulating ported by said plug portion an having a plurality of open-ended cylindrical recesses therein, communicating with each other, a

' plurality of threaded shell receptacle icon tacts, one for each of said cylindrical recesses, each insertable into its recess through the outer end thereof, anchorage means located at the junction of said cylindrical recesses, means accessible for securingand releasing operation through the opening ends of said recesses forsecuring said threaded shell receptacle contacts to-said anchorage vmeans, a center contact in .each' receptacle recess, switch con'tacts, one electrically connected with. said plug center contact and one with'one of said receptacle center contacts, and aswitch arm for making and breaking the circuit withIrespectto said switch contacts. i

12. A two-way plug receptacle comprising a plug portion and a receptacle portion said receptacle portion comprisin shell an cen ter contacts and a casing t erefor having two outlet openings extending at an angle base sup-g to each other for the insertion and removal of said shell contactswithout rotation, and means accessible for operation through the open ends of said shell contacts whereby said shell contacts may be secured in place after .the have been inserted in position throughreceptacle compris-" heads accessible .for' operation through the I open ends of said shell contacts.

14. A two-way plu receptacle compris- *-ingap l'ug portion an a receptacle portion, said plug portion comprising an insulating base, a center contact mounted thereon and a threaded shell: contact surrounding sald insulating base, said receptacleportion comprising'an insulating base, threaded shell and center contacts supported; thereby, and" means for securing said bases together and electrically connecting the plug center con;

tact with thereceptacle center contact comprising, .a screw extending ax1ally,throu'gh said bases, said' receptacle portion having two 'outlet'openin extending at an angle 7 to each otherfo'r 't e insertion and'removal ."of said shell'contacts without rotation, and

means accessible for securing and releasin o eration throu hthe open ends of em s ell contacts w1ereb said shell contacts may be secured, in ace after-the have been inserted in position through sai openm s. a

n witness whereof, I have hereunto subscribed my name;

REUBEN B. B ELlJAM IN. 

